Final answer:
The college student initially invested $30,000 in the money market account.
Step-by-step explanation:
Let's assume the amount invested in the money market account is x. Since the total amount invested is $60,000, the amount invested in stocks would be $60,000 - x.
Now, we can calculate the interest earned from each investment. The interest earned from the money market account is 0.06x, and the interest earned from the stocks is 0.08($60,000 - x).
Given that the total interest earned after one year is $4250, we can set up the equation 0.06x + 0.08($60,000 - x) = $4250.
Solving this equation, we find that x = $30,000. Therefore, the college student initially invested $30,000 in the money market account.